Hi Travis,
after logging in you should see on the left a "User Menu" with a link to "Submit a file".
That way you should upload PDF or DOC files containing your maps (or even HexBattle generated map).
On the other hand you could also send me a direct email to
admin@commandsandcolors.net/ancients
and I'll publish it for you!
If you find some problems, please report it to me.
Thanks.